I ran 18x8 with 235s on the front of my 33GTSt, with +35 offset, 18x9 265s rear +35 (I think).
I reckon you'll struggle to fit the 18x9 +26 on the front unless running a narrow tyre like a 225, as they will stick out of the guards.
Similarly the 18x10 +13 is closer to GTR offset, so will definitely stick out the guards, by an inch or so...
looks like lipped and flared